Radiocarbon detection with quantum cascade laser based cavity ring-down spectroscopy

Guillaume Genoud, Markku Vainio, H. Philips, J. Dean, Albert Manninen, Mikko Merimaa

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review


    With the latest advances in mid- infrared (IR) technology emerge new spectroscopic applications. Amongst other, optical radiocarbon detection allows for real-time, on-site leak detection in nuclear facilities. Natural abundance of the radiocarbon in ambient air is about 14C/12C = 1.2 ppt, whereas it can reach low ppm levels in radioactive waste repositories. Radiocarbon is present in all parts of nuclear power plants and is potentially subject for release, mostly in the form of carbon dioxide. The current state-of-the-art in 14CO2 monitoring is Accelerator Mass Spectrometry and Liquid Scintillation Counting techniques. However, both techniques are limited to lab-based analysis, requiring complex and time consuming sample treatment and measurement procedures. Optical radiocarbon detection has been studied for nearly 40 years, and high sensitivity was achieved in the past few years by intracavity optogalvanic and saturated absorption Cavity Ring-down Spectroscopy (CRDS) techniques. Both techniques require too large light sources to be implemented for in-situ measurements.
    Original languageEnglish
    Title of host publicationProceedings of the 2015 European Conference on Lasers and Electro-Optics
    Subtitle of host publicationEuropean Quantum Electronics Conference, CLEO/Europe-EQEC 2015
    PublisherOptical Society of America OSA
    ISBN (Print)978-1-4673-7475-0
    Publication statusPublished - 2015
    MoE publication typeA4 Article in a conference publication
    EventEuropean Conference on Lasers and Electro-Optics, CLEO 2015 - Munich, Germany
    Duration: 21 Jun 201525 Jun 2015


    ConferenceEuropean Conference on Lasers and Electro-Optics, CLEO 2015


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